Science Daily: For decades researchers have recorded sounds from whales and other marine mammals, using a variety of methods including passive acoustic monitoring (PAM) to better understand how these animals use sound to interact with each other and with the environment. Now, for the first time, researchers report using this technology to record spawning cod in the wild.
Acoustic behavior in cod has been of interest for several decades, but few studies have observed their use of sound as part of reproductive behavior. Although both sexes produce low-frequency “grunts,” only male Atlantic cod make this sound during spawning season.
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